Regenerative furnace



-mvENToR ATTORNEY CL, V5.

Jan. 26 1926.,

' chambers,

. end vof the furnace Patented Jan. 26, 1926.

TIMOTHY BURNS, 0F BUFFALO,

NEW YORK, ASSIGNOR T0 BETHLEHEMSTEEL `COM .'PANY, OF BETHLEHEM, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

REGENERATIVE i FURNACE.

Application iledDecember 21, 1923. Serial No.- 681,929.

To all whom t may concern Y Be it known that I', TIMOTHY BURNS, a citizen of the United States, and residing at Buffalo, county of Erie, State of New York, have invented certain new and useful Improvements in Regenerative Furnaces, of which the followin is a specification.

My invention reites to regenerative furnaces and it has for its object to provide transverse metallic beam structures in the roof of such a furnace in order to divide the latter into sections and to sustainV lateral thrusts therefrom. y

Apparatus made in accordance with my invention is illustrated in the accompanying drawings, forming part of this application, in which:

'Figure 1 is a plan view of a furnace showing my improved beam structure applied thereto; 1

y Figure 2 is a longitudinal sectional view of the apparatus shown in gure 1; and

Figure 3 is a detail plan view of a portion of the beam structure.

Referring now to the accompanying drawings for a more detailed'description of my invention, in Figures 1 and 2 I show a'portion of a furnace -or melting chamber, at 10, which is comprised by the hearth 11, parallel side wa1ls12, convergingend walls 13, and a roof section 14, and one end chamber, at 15, comprised by a bottom 16, converging side walls 17, and be understood that each end of the furnace is similarly constructed and that, therefore, the detail illustration and description of one end is regarded as being sufficient for the purpose of a disclosure of my invention.

The end chambers 15 serve ina wellrnown manner as mixing or combustion gas being gas uptake 20 and air being supplied by the air uptake 21.

The converging walls 13 and 17 at each constitute reentrant or monkey walls and I show inset buckstays 22 to afford lateral support to the latter, t-he furnace being supplied with other pairs of opposed buckstays 23 in the usual manner.

The opposed inset buckstays 22 are connected by a transverse beam structure, at 24., which serves to separate the roof sections 14 and 18; and, as illustrated inii re 2, such beam structure would serve to a ord lateral support to the-roof sections particua roof section 18. It 1s to I supplied thereto by the larly if vsuch sections are inclined in the direction of the length of the furnace. The

beam structures, at 24, are preferably con'- structed of complemental beam members 25 which are secured to opposite sides of a buckstay 22 as indicated in Figure 3. As the. beam members 25 are subjected to intense heat, I preferably provide the latter with water cooling conduits or passages 26.

I show a pair of beam members 25 which are spaced apart sutliciently to define a damper entrance slot or opening 27 for a damper 28 and to receive water cooled liners or knuckles 29 arranged oppositely to the vertical edges of the damper.

-Fromfthe foregoing-it will be apparent that I have provided a furnace having its roof divided into a dplurality of sections by transversely exten ing beam structures, whereby the sections may-be independently repaired or rebuilt, thereby making the maintenance of the furnace more economical.

While I have shown my inventionfin but in the art that it is notso limited, but is susceptible of various other changes and mod ifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed bythe prior art or as .are specically set forth in the appended clalms.

Having` thus described the invention, what ters Patent is:

1. In a regenerative furnace, in combination, end portions having reentrant side walls, a roof, buckstays for supporting the reentrant sidewalls, and a beam structure connected to opposite uckstays and constitutinga portion'of the roof..

2. n a regenerative furnace, the combination of a melting chamber, mixing and combustion chambers at the ends of the melting chamber, opposed pairs of buckstays at the ends of the melting chamber,beam structures secured to the/opposed pairs of buckstays,

one form, it will be obvious to those skilled claim as new andvdesire to secure by Letroofs for the mixing and combustion chambers slopingdownwardly toward the melting chamber and engaging said beam-structures, anda rof for the melting chamber interposed between and engaging said beam structures.

' 3. yIn a regenerative furnace, in combinaand combustion chamber, a

tion, a mixm y. furnace cham er, 'said mixing and combustion chamber including reentrant side walls and a, roof sloping downward toward the furnace chamber, buckstays .in contact exteriorly with the reentrant walls, a beam structure connected to the buckstays and in Contact at one side with the lower end of the sloping roof, and a furnace roof contacting with the other side of the beam structure.

4. In a regenerative furnace, in combination, monkey walls vat the furnace ends;v defining passages which flare toward the furnace and toward the regenerators, roofs for the regenerator flaring portions of the pas sages which slope downwardly toward the furnace flaring portions, transverse beams for supporting the lower ends of said roofs, f

and a roof for the furnace flaring portions and the furnace proper in juxtaposition with respect to said beams.

5. ln a regenerative furnace, in combination, a melting chamber, regenerator passageways communicating with the chamber, downwardly-sloping roofs for said passages, transverse beam structures for supporting the lower ends of said roofs, and a melting chamber roof having its ends engaging said structures.

6. In a. regenerative furnace, in combination, a melting chamber, inlet and exhaust passages for the melting chamber, roofs for the passages whose crowns slope downwardly toward the melting chamber, beam structures disposed transversely of the crowns of the roofs for supporting the latter, and a melting chamber roof having its ends engaging said structures.

In testimony whereof I hereunto affix' my signature this 8th day of December 1923.

TIMOTHY BURNS. 

